Window blind attachment



Dec. 17, 1940. M. J. LANG WINDOW BLIND ATTACHMENT Filed July 29, 1939MURRAY J. LANG ATTORNEY Patented Dec. 17, 1940 PATENT OFFICE WINDOWBLIND ATTACHMENT Murray J. Lang, Brooklyn, N. Y.

Application July 29, 1939, Serial No. 287,328

4 Claims.

This invention relates generally to window shade and Venetian blindholders, but more specifically to an adjustable attachment for each endof the stick at the lower edge of the shade or 5 at each end of thelower strip of a Venetialn blind which disengageably maintains the shadeor blind in fixed position along desirable points of the window frameand which consequently prevents rattling thereof.

The main object of the invention resides in the provision of anattachment for each end of window shade sticks and the lower strip ofVenetian blinds which is adjustable for window openings of variouswidths and for sticks and strips 5 of varying Widths whereby the shadeor Venetian blind may be held in place at any desirable levels underconditions which normally would bring about rattling thereof.

A further object of the invention resides in 20 the provision of asimple and economical attachment for Window shade sticks and Venetianblind strips which is easily applied and removed and which does notnecessitate any alteration in the window frame side members and thewindow 25 shade stick or Venetian blind lower strip.

These objects and other incidental ends and advantages of the inventionwill hereinafter appear in the progress of the disclosure and as pointedout in the appended claims.

Accompanying this specification is a drawing showing a preferred form ofthe invention wherein corresponding reference characters designatecorresponding parts throughout the several views and wherein:

Figure 1 is a view in elevation of a window frame and a window shademounted thereon showing the attachments of the invention securing theshade between the side members of the window frame in any extended andalternate 40 position.

' Figure 2 is an enlarged fragmentary elevational view, beingforeshortened and showing details of construction of the attachment asapplied to each end of a window shade stick and engaging 45 the windowframe, the window frame being shown in alternate width and theattachments adjusted for said alternate window frame width.

Figure 3 is a longitudinal sectional view of the attachment per se.

Figure 4 is a left hand end view of Figure 3.

Figure 5 is an end view in elevation of Figure 3 partly in section alongthe plane 5-5.

Figure 6 is a sectional view of Figure 2 along the plane 5-6 thereof.

In accordance with the invention and the preferre-d form shown, numeralrepresents a conventional window shade having a hem II at the lower edgeto carry therewithin the usual Window shade stick l2. The shade I0 isprovided with the known spring roller I 3 mounted between side membersId of a window frame, and a draw string I3 secured to stick l2.

The attachment essentially is comprised of a channel member generallydesignated by numeral 15, having a bottom wall l6 provided with alongitudinal and intermediate opening IT, a front and a rear wall I8 andI9 respectively and a top wall 20 which is upwardly offset intermediatethe width thereof to form a longitudinal housing 2|. Channel member I5at one end thereof is provided with an end wall or stop 22 having atransverse and intermediate opening 23.

Projecting downwardly from the top wall of housing 2| are two similarspaced and aligned brackets 24 and 25, the latter bracket beingpositioned adjacent the end wall 22. The said brackets 24 and 25 areadapted to serve as bearings for a shaft 26 projecting therethrough, thesaid shaft at one end carrying an engaging head generally designated bynumeral 39. Shaft 26 25 at said end is enlarged and threaded as atportion 21, the latter carrying therewith an internally threaded nut orwasher 28. An expansion coil spring 29 surrounding shaft 26 ismountedbetween bracket 24 and the inner face of nut 28, the outer face of thenut abutting bracket 25. In this manner, shaft 26 is springably mountedbetween brackets 24 and 25, the shaft 26 being depressible inwardlyagainst the force of the spring 29.

The outer end of shaft portion 21 projecting beyond the end wall 22 ofchannel I5 is adapted to threadedly engage head or plunger 30. Thelatter is preferably comprised of a body member 3| having an extensionon the inner Wall provided with an internally threaded bore '32 whichengages the end of threaded shaft portion 21. A rounded friction membersuch as rubber disc 33 is mounted on the outer wall of body 3| by meansof a securing eyelet 34 engaging body 3|.

In mounting shaft 26 within housing 2|, it is necessary to removeplunger 30. Then shaft 26 carrying threaded nut 28 and spring 29 isinserted from the unthreaded end through an openmg in bracket 24 andpulled until the opposite end of shaft 26 is drawn inside of bracket 25against the pressure of spring 29. The expansion of spring 29 willthereupon force the shaft end 21 through the opening in bracket 25 untilnut 28 abuts the inner wall of the bracket 25. Thereafter the plunger 30is screwed on to shaft portion 2! extending beyond the channel.

Channel l5 may be a metal stamping. The end wall 22 can be formed byturning down extended portions of top wall 20 while the brackets 24 and25 may be struck from cut-outs 24 and 25 in the top wall of housing 2|.

The attachment above described may be inserted on the ends of a windowshade stick I2 within hem H. The channel l5 being preferably made of ayieldable metal, is adjusted by hand pressure to the dimensions of stickI2 through the expedients of openings l1 and 23. Where the width of awindow frame does not permit insertion of stick [2 with the endattachments secured thereto, plunger may be extended from or drawn intothe channel by turning the same about nut 28 locked in position byspring 29.

After the channel members are clamped over the ends of a window stick l2within hem ll so that the end walls 22 abut the end walls of the stick,the plungers 25 are normally screwed out until the distance between bothexceed the width of the window frame. In such condition it is necessaryto grasp stick i2 and depress one plunger against a side member 14 ofthe window frame in order to insert the other plunger against the otherside member of the window frame. Upon the release of pressure, theexpandingaction of spring 29 causes the depressed plunger to returnoutwardly and thus fix the stick l2 between the window frame members. Ifit is required to raise the window shade after being fixed in place, oneplunger is depressed by pressing the stick against that side until thestick is released from the window frame. Thereupon, the shade isadjusted to the desired height, and the above operation is repeated.

It is understood that the channel member [5 may be applied to the endsof the bottom strip of a Venetian blind to maintain the same in placeexactly as in the case of a window shade.

I wish it understood that minor changes and variations in theintegration, location, material, and combination of parts, may all beresorted to without departing from the spirit of the invention andwithout departing from the scope of the appended claims.

I claim:

1. In an attachment for each end of window shade and Venetian blindbottom strips to detachably engage the shade and Venetian blind againstthe side members of a window frame to prevent rattling, an adjustableclamping member frictionally engaging each end of said strip, a springactuated and depressible plunger member secured to and projecting fromthe end, of the clamping member and adapted to frictionally engage aside member of the window frame, the said plunger member being providedwith means for adjusting the limiting outermost position.

2. In an attachment for each end of window shade and Venetian blindbottom strips to detachably engage the shade and Venetian blind againstthe side member of a window frame to prevent rattling, an adjustabletubular clamping member frictionally engaging each end of said strip, ahousing forming part of said clamping member, a spring-actuated anddepressible plunger member mounted within said housing and projectingtherefrom to frictionally engage a side member of the window frame meansto adjust the limiting outermost position of the said plunger.

3. In an attachement for each end of Window shade and Venetian blindbottom strips to detachably engage the shade and Venetian blind againstthe side members of a window frame to prevent rattling, an adjustablesplit sleeve adapted to frictionally engage each end of said strip, ahousing formed on the said split sleeve, a depressible andspring-actuated plunger mounted within said housing and projectingtherefrom to frictionally engage a side member of the window frame meansto adjust the outermost limiting positon of said plunger.

4. In an attachment for each end of window shade and Venetian blindbottom strips to detachably engage the shade and Venetian blind againstthe side members of a window frame to prevent rattling, a flexible splitsleeve adapted to be detachably clamped over each end of said strip, adepressible and spring-actuated plunger secured to and projecting fromthe said sleeve to frictionally engage a side member of the window framemeans to adjust the outermost limiting position of said plunger.

MURRAY J. LANG.

